Beyond the New Wave waltzes and bohemian rhapsodies that established her as a visionary in the late '70s and early '80s, Kate Bush's experimental tendencies unfurled: She lost herself in passion (“Feel It”) and hungrily communed with the natural world (“Hello Earth”). Though less familiar than her earlier hits, the muted, jazz-inflected reveries on 2011's 50 Words for Snow are a testament to her limitless imagination.